CN103035380A - Inductor assembly structure capable of reducing leakage magnetic flux - Google Patents
Inductor assembly structure capable of reducing leakage magnetic flux Download PDFInfo
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- CN103035380A CN103035380A CN2012105607810A CN201210560781A CN103035380A CN 103035380 A CN103035380 A CN 103035380A CN 2012105607810 A CN2012105607810 A CN 2012105607810A CN 201210560781 A CN201210560781 A CN 201210560781A CN 103035380 A CN103035380 A CN 103035380A
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Abstract
The invention relates to an inductor assembly structure capable of reducing leakage magnetic flux. The inductor assembly structure comprises a magnetic core, a coil, a fixed seat and at least one fastener, wherein the coil surrounds the magnetic core and is clamped by the fixed seat; the fastener penetrates through the fixed seat along the axial direction to fix the coil and the magnetic core; the fastener comprises a plurality of magnetically-conducted parts and at least one non-magnetically-conducted part; and the plurality of magnetically-conducted parts are connected by the at least one non-magnetically-conducted part to form a whole and arranged at a preset interval capable of breaking a leakage magnetic path of the fastener.
Description
Technical field
The present invention relates to the design of bank of inductors assembling structure, especially relate to the bank of inductors assembling structure that reduces leakage flux.
Background technology
The basic structure of inductor is to be made of the wire wounded core.Arranged outside fixture at magnetic core is assembled magnetic core and coil, forms a package assembly.When working, inductor except the main flux of in magnetic core, guiding, also forms leakage flux.Leakage flux can be outside magnetic core section and/or in fixture, produce eddy current, eddy current may cause magnetic core or fixture part to be heated consumingly.Heating has caused power consumption penalty simultaneously.
One of reason that produces leakage flux is that fixture is used permeability magnetic material, for example iron inevitably.Like this, the magnetic field of inductor generation will form leakage flux by permeability magnetic material.When the distance of fixture and magnetic core was enough far away, the impact of leakage flux was in tolerable scope.But in the inductor of compact design, the impact of leakage flux becomes and can not ignore.Therefore need a kind of suitable bank of inductors assembling structure of design, thereby reduce leakage flux.
Summary of the invention
Technical problem to be solved by this invention provides a kind of bank of inductors assembling structure that reduces leakage flux.
The present invention is that to solve the problems of the technologies described above the technical scheme that adopts be to propose a kind of bank of inductors assembling structure that reduces leakage flux, comprises magnetic core, coil, holder and at least one securing member; This coil is around magnetic core, and sandwiched with this holder, and this securing member is from axially passing this holder, and this coil and this magnetic core are fixed.This securing member comprises a plurality of magnetic conductive parts and at least one non-magnetic parts, these at least one non-magnetic parts should be a plurality of magnetic conductive parts connect in aggregatesly, and make the preset distance that is enough to disconnect the leakage field magnetic circuit of this securing member of being separated by between each magnetic conductive part.
In one embodiment of this invention, this holder comprises the first clamping plate, the second clamping plate and base plate, and these first clamping plate and these second clamping plate are vertical at this base plate two ends, and this magnetic core is positioned over and is folded on this base plate between these first clamping plate and this second clamping plate.
In one embodiment of this invention, the quantity of this securing member is one, from the side of axially passing this holder to fix this magnetic core and this coil.
In one embodiment of this invention, this holder comprises and is oppositely arranged the first clamping plate and the second clamping plate, and this magnetic core is folded between these first clamping plate and this second clamping plate.
In one embodiment of this invention, the quantity of this securing member is two, respectively from the both sides of axially passing this holder to fix this magnetic core and this coil.
In one embodiment of this invention, the material of these non-magnetic parts is aluminium, plastics or nylon.
The present invention is owing to adopt above technical scheme, make it compared with prior art, block leakage flux by in the securing member of package assembly, adding non-magnetic parts, thereby eliminate the loss that leakage flux produces, reduce the temperature of inductor, the performance of inductor and place circuit is provided.
Description of drawings
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:
Figure 1A, 1B illustrate respectively end view and the vertical view of an existing bank of inductors assembling structure.
Fig. 2 A, 2B illustrate respectively end view and the vertical view of the bank of inductors assembling structure of first embodiment of the invention.
Fig. 3 A, 3B illustrate respectively end view and the vertical view of the bank of inductors assembling structure of second embodiment of the invention.
Embodiment
A common bank of inductors assembling structure is at first described, with the reason of explaining that leakage flux produces.Shown in Figure 1A, 1B, common bank of inductors assembling structure 10 comprises magnetic core 11, coil 12, holder 13 and securing member 14.Coil 12 is around magnetic core 11, and the two is sandwiched with holder 13.At last, securing member 14 is from axially passing holder 13, and coil 12 and magnetic core 11 is fixing.Here holder 13 can use non-magnet material, yet securing member 14 can only adopt permeability magnetic material, for example iron usually.Like this, except the main flux of normal operation, also can produce leakage flux on the inductor.When having less distance (g1, g2) between securing member 14 and the magnetic core 13, leakage flux can be comparatively remarkable.Can greatly affect like this normal operation of inductor, increase considerably the inductor loss, cause the inductor temperature to raise, reduce the efficient of whole circuit.
According to the design of the embodiment of the invention, a kind of bank of inductors assembling structure is proposed, to cut off the magnetic circuit of leakage flux.Simultaneously, the compactedness that keeps inductor.
Fig. 2 A, 2B illustrate respectively end view and the vertical view of the bank of inductors assembling structure of first embodiment of the invention.Shown in Fig. 2 A, 2B, bank of inductors assembling structure 20 comprises magnetic core 21, coil 22, holder 23 and securing member 24.Coil 22 is around magnetic core 21, and the two is sandwiched with holder 23.This holder 23 can comprise the first clamping plate 23a, the second clamping plate 23b and base plate 23c, and the first clamping plate and the second clamping plate 23b are vertical at base plate 23c two ends.Magnetic core 21 is positioned over base plate 23c upward and is interposed between the first clamping plate and the second clamping plate 23b.At last, securing member 24 is from axially passing a side of holder 23, and coil 22 and magnetic core 21 is fixing.Here holder 13 can use non-magnet material.The characteristics of present embodiment are that securing member 24 comprises the first magnetic conductive part 24a, the second magnetic conductive part 24b and non-magnetic parts 24c.Non-magnetic parts 24c connects the first magnetic conductive part 24a, the second magnetic conductive part 24b, and the securing member 24 of complete.At this moment, interval one preset distance g3 between the first magnetic conductive part 24a and the second magnetic conductive part 24b.Be as the criterion can disconnect the leakage field magnetic circuit apart from g3.Indefinite according to the different g3 distances of stray field intensity, generally be not less than 3mm apart from g3.Non-magnetic parts 24c can select from many materials, such as aluminium, plastics (such as PET), nylon etc.By the design of present embodiment, can significantly reduce the loss of leakage flux and generation thereof, reduce the temperature of inductor, improve the performance of inductor and whole circuit.
Although only comprise in the above-described embodiments 2 magnetic conductive parts and 1 non-magnetic parts, namely carry out blocking of leakage flux by 1 non-magnetic parts, be understandable that in other embodiments, the non-magnetic parts that block leakage flux can be for a plurality of.For example, 2 non-magnetic parts connect 3 magnetic conductive parts, form 2 places and block.
Fig. 3 A, 3B illustrate respectively end view and the vertical view of the bank of inductors assembling structure of second embodiment of the invention.Shown in Fig. 3 A, 3B, different from last embodiment is that the holder of the bank of inductors assembling structure of present embodiment is reduced to the clamping plate of two separation, and is assembled by two securing members.Specifically, bank of inductors assembling structure 30 comprises magnetic core 31, coil 32, holder 33, the first securing member 34 and the second securing member 35.Coil 32 is around magnetic core 31, and the two is sandwiched with holder 33.This holder 33 can comprise the first clamping plate 33a and the second clamping plate 33b that is oppositely arranged.Magnetic core 31 is interposed between the first clamping plate 33a and the second clamping plate 33b.The first securing member 34 is from axially passing the side of the first clamping plate 33a, the second clamping plate 33b, and the second securing member 35 is from axially passing the opposite side of the first clamping plate 33a, the second clamping plate 33b, and is jointly that coil 32 and magnetic core 31 is fixing.Here the first clamping plate 33a and the second clamping plate 33b can use non-magnet material.The characteristics of present embodiment are that the first securing member 34 can comprise the first magnetic conductive part 34a, the second magnetic conductive part 34b and non-magnetic parts 34c.Non-magnetic parts 34c connects the first magnetic conductive part 34a, the second magnetic conductive part 34b, and the first securing member 34 of complete.At this moment, interval one preset distance g3 between the first magnetic conductive part 34a and the second magnetic conductive part 34b.Similarly, the second securing member 35 can comprise the first magnetic conductive part 35a, the second magnetic conductive part 35b and non-magnetic parts 35c.Non-magnetic parts 35c connects the first magnetic conductive part 35a, the second magnetic conductive part 34b, and the second securing member 35 of complete.At this moment, interval one preset distance g3 ' between the first magnetic conductive part 35a and the second magnetic conductive part 35b.Be as the criterion can disconnect the leakage field magnetic circuit apart from g3 and g3 '.Different according to stray field intensity, g3 and g3 ' distance are indefinite, and generally each is not less than 3mm. Non-magnetic parts 34c and 35c can select from many materials, such as aluminium, plastics (such as PET), nylon etc.By the design of present embodiment, can significantly reduce the loss of leakage flux and generation thereof, reduce the temperature of inductor, improve the performance of inductor and whole circuit.
The inductor of the embodiment of the invention can have many purposes, for example: the boost inductance (Active PFC Reactor) that is used for the active power factor correcting current of control Electric Network Higher Harmonic in the power circuit; Solar inverter, the DC boosting inductance in the DC voltage booster circuit such as USP (DC Boost Reactor); Solar inverter, AC filter inductance in the ac filter circuit of the various inverters such as UPS (AC Filter Reactor).
Although the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment illustrates the present invention, in the situation that does not break away from spirit of the present invention, also can make variation or the replacement of various equivalences, therefore, as long as in connotation scope of the present invention in the scope to the variation of above-described embodiment, claims that modification all will drop on the application.
Claims (6)
1. a bank of inductors assembling structure that reduces leakage flux comprises magnetic core, coil, holder and at least one securing member; This coil is around magnetic core, and sandwiched with this holder, this securing member is from axially passing this holder, and this coil and this magnetic core are fixed, it is characterized in that, this securing member comprises a plurality of magnetic conductive parts and at least one non-magnetic parts, and these at least one non-magnetic parts are should a plurality of magnetic conductive parts connections in aggregates, and makes the preset distance that is enough to disconnect the leakage field magnetic circuit of this securing member of being separated by between each magnetic conductive part.
2. the bank of inductors assembling structure of reduction leakage flux as claimed in claim 1, it is characterized in that, this holder comprises the first clamping plate, the second clamping plate and base plate, these first clamping plate and these second clamping plate are vertical at this base plate two ends, and this magnetic core is positioned over and is folded on this base plate between these first clamping plate and this second clamping plate.
3. the bank of inductors assembling structure of reduction leakage flux as claimed in claim 2 is characterized in that, the quantity of this securing member is one, from the side of axially passing this holder to fix this magnetic core and this coil.
4. the bank of inductors assembling structure of reduction leakage flux as claimed in claim 1 is characterized in that, this holder comprises and is oppositely arranged the first clamping plate and the second clamping plate, and this magnetic core is folded between these first clamping plate and this second clamping plate.
5. the bank of inductors assembling structure of reduction leakage flux as claimed in claim 4 is characterized in that, the quantity of this securing member is two, respectively from the both sides of axially passing this holder to fix this magnetic core and this coil.
6. the bank of inductors assembling structure of reduction leakage flux as claimed in claim 1 is characterized in that, the material of these non-magnetic parts is aluminium, plastics or nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560781.0A CN103035380B (en) | 2012-12-21 | 2012-12-21 | Reduce the inductor package assembly of leakage magnetic flux |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210560781.0A CN103035380B (en) | 2012-12-21 | 2012-12-21 | Reduce the inductor package assembly of leakage magnetic flux |
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| Publication Number | Publication Date |
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| CN103035380A true CN103035380A (en) | 2013-04-10 |
| CN103035380B CN103035380B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210560781.0A Active CN103035380B (en) | 2012-12-21 | 2012-12-21 | Reduce the inductor package assembly of leakage magnetic flux |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982967A (en) * | 2012-12-21 | 2013-03-20 | 田村（中国）企业管理有限公司 | Inductor assembly structure capable of reducing leakage magnetic flux |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004015043A (en) * | 2002-06-11 | 2004-01-15 | Ryuichi Shimada | Magnetic tap transformer |
| JP2010153616A (en) * | 2008-12-25 | 2010-07-08 | Fdk Corp | Multilayered inductor |
| CN201820576U (en) * | 2010-10-26 | 2011-05-04 | 钱旭 | Magnetic core reactor |
| CN201877254U (en) * | 2010-11-11 | 2011-06-22 | 钱旭 | High-impedance core transformer |
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2012
- 2012-12-21 CN CN201210560781.0A patent/CN103035380B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004015043A (en) * | 2002-06-11 | 2004-01-15 | Ryuichi Shimada | Magnetic tap transformer |
| JP2010153616A (en) * | 2008-12-25 | 2010-07-08 | Fdk Corp | Multilayered inductor |
| CN201820576U (en) * | 2010-10-26 | 2011-05-04 | 钱旭 | Magnetic core reactor |
| CN201877254U (en) * | 2010-11-11 | 2011-06-22 | 钱旭 | High-impedance core transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102982967A (en) * | 2012-12-21 | 2013-03-20 | 田村（中国）企业管理有限公司 | Inductor assembly structure capable of reducing leakage magnetic flux |
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| CN103035380B (en) | 2017-03-29 |
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